JP2010504216A - Method and apparatus for winding a strip with a winding mandrel. - Google Patents

Abstract

  The present invention relates to a method and apparatus for winding a strip (2) on a winding mandrel (3) arranged in a reel pit (1), the winding mandrel (3) having upper and lower drive rolls (5 In order to feed the strip from the drive mechanism with 6), a guide table (7) is provided below the strip (2) and above the metal band.

Description

  The present invention relates to a method and apparatus for winding a strip on a take-up mandrel arranged in a reel pit, for guiding the take-up mandrel to feed the strip from a drive mechanism with upper and lower drive rolls. The table is provided below the strip and above the metal band, and above the strip is provided with a strip brancher, a guide table extending to the vicinity of the winding mandrel, and a rotatable shaft cover.

  The drive mechanism known from German Offenlegungsschrift 19520709 comprises a fixedly-supported lower roll and a usable upper roll for this lower roll. The usable upper roll is a pressure means cylinder bearing an adjustable swivel frame. The swivel frame is composed of two wings located opposite each other. The wings are connected by a base part that is supported on both sides of the drive mechanism frame within a common swivel axis. The wings of these drive mechanisms are each adjustable by means of a separate acting pressure means cylinder, in which case the base connected together with the wings consists of a torsion bar.

  With the onset of various loads, with a relatively smaller differential force, the pressure means cylinder achieves various wing rotation angles and reaches a loadable upper roll. This is because the attractive force exerted from the drive mechanism by the rotation of the upper roll affects the strip and adjusts the tension distribution in this way.

  From DE 19704447, a measuring roll for measuring the flatness of a roll strip pressed in a hot rolling mill is known. One or several measuring rolls are pressed against the roll band from the bottom, between the rolling mill stands on the final path and / or after the final pressing of the final path in the roll direction, And / or before the streamer for winding and / or between the streamer and winder. With the measuring roll configured between the streamer and winder, the received measurements are used for turning the streamer, and from these methods, the progress of the strip by winding on the winder needle. Is adjusted.

  German Patent Application Publication No. 19953524 discloses a hoisting jack, which can measure a deterrent force between strip widths based on the longitudinal tension in the strip. In addition, the hoisting jack comprises a hoisting jack roll which is supported by a swivel arm on two sides. The swivel arm is divided by a joint between a rotary shaft arm and a roll arm, and is connected to a winding jack rotary shaft. This joint divides the reset force measured by a dynamometer provided with a swivel arm exerted from the strip on a hoisting jack roll acting from below on the strip. This reset force corresponds to the longitudinal tension, so that the longitudinal tension can be calculated from the measured reset force. In order to prevent the roll arm from being removed from the dynamometer, the rotary shaft arm and the roll arm are connected to each other via a support element. Based on either the overall longitudinal tension or the calculated deterrence, for example, the outflow direction and the inflow direction configured from the roll stand or drive mechanism are the number of rotations or adjustment of the roll. As readjusted.

German Patent Application Publication No. 19520709 Specification German patent application 19704447 German Patent Application Publication No. 19953524

  The present invention firstly adjusts a method and apparatus capable of achieving an improved tension measurement of a strip in a reel pit and, in addition, a pusher or drive mechanism having such an effect on strip travel. Thus, it is an object of the present invention to provide a method and apparatus capable of achieving a straight end strip.

    These problems are that the longitudinal tension exerted on the strip from the drive mechanism is measured by the strip tension measuring device entering the strip from above the reel pit for strip running control by the table means, and the drive mechanism This is solved by the method according to the invention in which a measurement signal is sent to the control device.

  By turning the strip tension measuring device from above on the strip according to the invention, an optimum winding angle is maintained, in particular at the end of the strip. These are not possible when turning the tension measuring device from below, in which case the winding angle is greatly limited and reduced by the strip branching device including the shaft cover required above the strip. An accurate measurement at the edge is not possible. Here, the strip movement is particularly difficult because of the strip tension that no longer exists at the finishing stage of the roll path, so the measurement at the strip end needs to be accurate.

  Based on the longitudinal tension in the strip, the detent force of the tension distribution that is present on the strip width and calculated from the strip tension measuring device pushed into the strip with a winding angle is The present invention proposes that it is determined from the bearing force.

  In addition to this, a more preferred implementation of the invention is that for direct or indirect bearing force measurement, the roll of tension measuring device inserted into the strip further generates the formed winding angle. The winding angle adjusts the conduction of the force reliably from the strip to the roll and to the dynamometer provided with the device for strip tension measurement.

  In order to operate, the strip tension measuring device requires at least one cylinder and, according to the proposal of the present invention, is provided with a swivel cylinder that adjusts the stroke behind the swivel arm. Alternatively, there may be two turning cylinders. A different way for the operation of the strip tension measuring device is that the strip tension measuring device is composed of a U-shaped frame, in which the cylinder is configured on the axis of symmetry of the frame.

  It is appropriate that the winding angle is kept substantially constant by controlling the pushing of the roll. The winding angle depends on the stroke of a plurality of turning cylinders or one turning cylinder and the diameter of the wound coil. At least one swivel cylinder is controlled to maintain optimum winding during the entire winding process. The command value depends on the temporary coil diameter during the winding process, and optimal winding and geometric data are calculated. In order to detect the stroke, a measuring means is attached to or attached to the rotating cylinder. Optionally, the rotatable strip tension measuring device is equipped with an angle measuring device, so that the stroke of the rotating cylinder can be calculated. The temporary diameter of the coil is determined by the number of turns of the winding mandrel and the thickness of the strip. As an alternative, a direct measurement of the coil diameter, for example a laser optical measuring device, is also conceivable.

  According to a further preferred form of the invention, the roll of the strip tension measuring device increases in speed relative to the speed of the strip before turning. The roll is then swung onto the strip during the winding process, and damage to the strip due to increased speed can be avoided by the process of increasing the required speed later. The roll power can be mechanical and / or electrical and / or hydraulic.

    In order to solve the problem underlying the present invention, in particular an apparatus for carrying out the method, the strip branching device comprises a strip tension measuring device which can enter the strip from above, and the side section The side portion includes a roll arm that supports a roll that is rotatably supported at the front end of the side portion, and a dynamometer is disposed between the side portion and the roll arm. It is connected with the control device of the drive mechanism by signal technology. The strip tension measuring device according to the present invention also has a conventional strip branching function. In a non-operating state, i.e., in an operating state where it enters a flowing strip from a standby state, the entire strip tension measuring device is turned counterclockwise down, and at the same time, a continuous maxi-mandrel Because of the strip moves.

  At the same time, the strip tension measuring device as a strip branching device is supported in a preferred manner in which at least the front part of a table, such as a turning table, is connected below the strip to the lower roll of the drive mechanism. This turning table can be turned counterclockwise around the lower roll.

  According to a preferred embodiment of the present invention, the side portion connects the rear turning arm with the front turning arm having the strip tension measuring device. The turning cylinder is mounted on the rear side, and hence on the power side, and the side surface as a connection between the turning arms receives a torsional stress on the operating surface and on the power surface with the turning arm. Torsional stress is generated by the operation of one side of the strip tension measuring device or the cylinder on the rear side or the power side.

  If a branching roll to be driven is configured on the rotary shaft of the strip tension measuring device, which is separated from the roll arm containing the operably-bearing roll, the drive mechanism for the next roll of the connected reel pit On the path from the lower roll of the strip, the strip is carried, but it is possible to protect the strip before damage.

  As a modified example of the present invention, a strip tension measuring device having a roll arm is extended to a winding mandrel and integrated with an upper shaft cover. These arrangements include the strip tension measuring device and the shaft cover. Combinations are possible. The roll in front of the strip tension measuring device can be connected up to the shaft cover reaching the first drive roll of the winding mandrel, and the free space for the upper roller of the drive mechanism is a conventional branch. A vessel can also be provided.

  Further features and details of the invention will be apparent from the subsequent description of embodiments of the invention as set forth in the claims and figures.

In the figure, a side view of reel pits important for knowing the state of the prior art is shown. In the figure, it is a side view of a reel pit provided with a strip tension measuring device entering from above the strip and having a strip branching function, and the strip tension measuring device is not operating away from the strip. FIG. 3 is a reel pit of FIG. 2 with a strip tension measuring device inserted in a measuring state or in an operating state, which briefly shows the end of the winding process. FIG. 3 shows a detailed cross-sectional view of a branch roll supported by a strip tension measuring device.

  The reel pit 1 illustrated in FIG. 1 in the conventional structure system is in a finishing stage for bundling the rolled strip 2 as a bundle or coil 4 (see FIG. 3) on the rolling line and on the winding mandrel. It is connected. The strip 2 is fed to the winding mandrel 3 of the drive device or drive mechanism, of which only the upper and lower drive rolls 5, 6 of the drive device or drive mechanism are shown. A table 7 continues below the strip 2 from the lower drive roll 6 to the winding mandrel 3. The first or leading end of the strip 2 supplied in this way adopts a first drive roll 8 belonging to the winding mandrel 3, to which a further roll arranged on the circumference is connected. ing.

  Above the strip, a strip branching device 9 is provided, and the strip branching device 9 is in contact with the upper drive roll at the strip standby position for receiving the strip. The strip branching device 9 is swung by a cylinder 10, and the strip branching device 9 has a piston rod attached to a rotating arm of the strip branching device 9. The reel pit 1 is provided with a shaft cover 11 leading from the strip branching device 9 to the winding mandrel 3 upward. In order to move the shaft cover 11, it is articulated by a cylinder 12.

  In the embodiment of the reel pit 1 illustrated in FIGS. 2 and 3, the members that coincide with the previously described reel pits have the same reference numerals. The strip tension measuring device 13 which simultaneously fulfills the strip branching function is an essential difference. This comprises a rear or drive side turning arm 14 and a front side turning arm 14, and the rear / drive side turning arm is apparent in FIG. 2. The two swivel arms 14 are connected to each other through a side surface portion 15 (see FIG. 4) having a torsional stress. In addition, the turning arm 14 includes a roll arm 16, and a rotating roll 17 is supported at the front end of the roll arm 16. The roll arm 16 is rotatably supported via a link mechanism 18. In order to avoid tilting due to gravity, the roll arm 16 is held by a holding unit 19.

  The strip tension measuring device 13 enters the strip 2 from above, and as soon as the roll 17 enters the strip while forming a winding angle (contact angle), a force is applied via the roll 17, and the force is applied to the roll. The arm 16 is impacted clockwise. Although clockwise rotation of the roll arm is hindered by the dynamometer 20, the dynamometer 20 is working to support the roll arm. The force generated by the support of the force axis 21 is detected and sent as a measurement signal to the control device 22 (see FIG. 3) of the drive mechanism. Based on the measured values, the control device 22 can perform various operations on the drive side and the operation side based on, for example, the rotation of the upper and lower drive rolls 5 and 6, the parallel rotation of the two rolls, or the command value (reference value). The force is controlled such that a coil 4 with straight strip edges can be formed on the winding mandrel.

  The strip tension measuring device 13 is located at the rear of the strip traveling direction, and a rotating shaft of the roll 17 is provided at the end of the strip tension measuring device 13 that is away from the roll 17 to constitute a branch roll 23. FIG. 2 and FIG. 3 show cross-sectional views in the region of the turning arm 7 through the pivot of the branch roll 23. Here too, the reel pit 1 closes the shaft cover 11 that can be rotated using the cylinder 12 upward. A thermally conductive table 7 that continues from the lower drive roll 6 below the strip 2 to the winding mandrel 3 and to the strip 2 is at least at the front end of the table 7 on the axis of the lower drive roll 6. A turning table 24 is configured that can move around in the clockwise direction.

  FIG. 3 shows the drive position immediately before the end of the winding process of winding up the strip 2 in order to create the coil 4, while an obvious winding angle can be extracted and the strip 2 Forms a winding angle based on the roll 17 entering the strip tension measuring device 13. On the other hand, various measurement signals 25 or control signals 26 are indicated by broken lines, and the measurement signals 25 and control signals 26 are received by the control device 22 and sent from the control device to the rotating means of the upper and lower drive rolls (broken line 26). reference). Parameters that are important for determining the optimum winding angle during the entire winding process and, in some cases, constant, are, in the embodiment, detection of the process of the rotating cylinder or of the strip tension measuring device 13. It is determined by the turning cylinder 10, in this case a cylinder with measuring means is provided and determined by the angular measurement of the strip tension measuring device 13 and the temporary diameter of the coil 4. This diameter determines the strip thickness from the counted rotation of the winding mandrel 3 (see the dashed line 25 exiting from the winding mandrel 3). In some cases, direct measurement of the diameter of the coil 4 is possible, such as using the illustrated laser optical measuring device 27.

  In any case, the measurement signal from the strip tension measurement at the reel pit is sent to the drive control and can be controlled to the command. This can also be done in the described embodiment with a strip tension measuring device / strip splitter combination or a strip tension measuring device / shaft cover combination. The strip tension measuring device 13 shown in FIGS. 2 and 3 comprises a roll 17 and can be arranged together on the shaft cover 11 towards the winding mandrel 3, i.e. line AA in FIG. It is possible to make it symmetric through In the free space from the upper drive roll 5 to the strip tension measuring device 13, it is possible to select whether or not to provide a known strip branching device 9 (FIG. 1).

DESCRIPTION OF SYMBOLS 1 Reel pit 2 Strip 3 Winding mandrel 4 Bundle / coil 5 Upper drive roll 6 Lower drive roll 7 Table 8 Drive roll 9 Strip branching device 10 Cylinder 11 Shaft cover 12 Cylinder 13 Strip tension measuring device 14 Turning arm 15 Side face 16 Roll Arm 17 Roll 18 Link mechanism 19 Holding unit 20 Dynamometer 21 Force axis 22 Drive mechanism control device 23 Branch roll 24 Turning table 25 Measurement signal 26 Measurement signal 27 Laser optical measurement device

Claims (12)

In order to send the strip to the winding mandrel (3) from a drive mechanism with upper and lower drive rolls (5, 6),
The guide table (7) is provided below the strip (2),
And,
A strip splitter above the strip;
A guide table (7) extending to the vicinity of the winding mandrel (3);
In the strip winding method in which the strip (2) is wound up by the winding mandrel (3) disposed in the reel pit (1), in which a rotatable shaft cover (11) is disposed.
The strip tension measuring device (13) entering the strip (2) from above the reel pit is used to measure the longitudinal tension exerted on the strip (2) from the drive mechanism for strip travel control via the table means,
And,
A strip winding method, characterized in that a measurement signal is sent to the control device (22) of the drive mechanism. The strip winding method according to claim 1,
A strip winding method, wherein a tension distribution restraining force is determined from a bearing force of a bearing of the strip tension measuring device (13). The strip winding method according to claim 1 or 2,
For direct or indirect bearing force measurement, the strip roll-up is characterized in that the entrained roll (17) further causes the generated winding angle by the insertion of a tension measuring device into the strip (2). Method. The strip winding method according to claim 3,
A strip winding method, characterized in that the winding angle is kept approximately constant by controlling the roll (17) that is inserted. The strip winding method according to claim 3 or 4,
A strip winding method, characterized in that the roll (17) increases the speed of the strip (2) before entering. In order to send the strip to the winding mandrel (3) from a drive mechanism with upper and lower drive rolls (5, 6),
The guide table (7) is provided below the strip (2),
And,
A strip splitter above the strip;
A guide table (7) extending to the vicinity of the winding mandrel (3);
The method of claim 1 is carried out, in particular with a winding mandrel (3) arranged in the reel pit (1), in which a rotatable shaft cover (11) is arranged, to roll up the strip (2). In the device for
The strip branching device includes a strip tension measuring device (13) that can enter the strip from above, and has a side surface portion (15).
The side surface portion (15) includes a roll arm (16) supporting a roll (17) rotatably supported at the front end of the side surface portion (15).
A dynamometer (20) is disposed between the side surface portion (15) and the roll arm (16), and this dynamometer (20) is connected to the control device (22) of the drive mechanism by signal technology. A strip hoisting device. The strip hoisting device according to claim 6,
The strip winding device characterized in that the side surface portion (15) connects the rear rotating arm (14) to the front rotating arm (14) having the strip tension measuring device (13). The strip hoisting device according to claim 7,
A strip hoisting device, characterized in that it has a turning cylinder (10) fitted with a rear turning arm (14) and equipped with a stroke adjuster. The strip hoisting device according to any one of claims 6 to 8,
The strip hoisting device characterized in that the roll (17) supported by the roll arm (16) can be driven. The strip hoisting device according to any one of claims 6 to 9,
A strip hoisting device, characterized in that a branch roll (23) which is moved on the axis of rotation of the strip tension measuring device (13) remote from the roll arm (16) is arranged. The strip hoisting device according to any one of claims 6 to 10,
A strip hoisting device, characterized in that at least the front part of the table (7) connected to the lower drive roll drive roll below the strip (2) comprises a turning table (24). The strip hoisting device according to any one of claims 6 to 11,
The strip tension measuring device (13) provided with the roll arm (16) is integrated with the upper shaft cover (11) with respect to the winding mandrel (3).

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